Diamond DA 42 NG, Maintenance Manual

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AIRCRAFT
DA 42 NG AMM
Landing Gear
Doc # 7.02.15
Rev. 4
32-50-00
Page 3
15 Mar 2018
2. Description
The nose wheel steering system has these major components:
A. Steering Linkage
One end of the steering linkage connects to the steering arm bracket on the rudder yoke assembly.
The rudder yoke assembly is located on the forward control bulkhead. The other end of the steering
linkage attaches to the steering actuator lever which is bolted to the top of the tubular strut of the
nose gear leg.
B. Linkage Buffer
A telescopic arm containing a compression spring makes the linkage buffer. When a force is
applied to one end of the telescopic arm the arm compresses the spring which then exerts a force
onto the other end of the telescopic arm. This allows the pilot to operate the rudder control system
when the nose wheel steering system has reached it’s limit of operation.
C. Centering Unit
A spring assembly which presses a roll against a slider plate makes the centering unit. The spring
assembly with the roller are attached to the tubular steel strut which does not rotate. The slider
plate is attached to the sliding tube guide which rotates about the leg axis when the nose wheel is
deflected.
When the nose wheel is deflected, the slider plate pushes the spring loaded roller up. The spring
creates a counter force which moves the nose wheel back into neutral position.